CN1179125A - Safety device for electricity driven hand tools, in particular circular and compass saw - Google Patents

Safety device for electricity driven hand tools, in particular circular and compass saw Download PDF

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Publication number
CN1179125A
CN1179125A CN 96192655 CN96192655A CN1179125A CN 1179125 A CN1179125 A CN 1179125A CN 96192655 CN96192655 CN 96192655 CN 96192655 A CN96192655 A CN 96192655A CN 1179125 A CN1179125 A CN 1179125A
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China
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tool
clutch
lifting
electromagnet
drive
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CN 96192655
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Chinese (zh)
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艾拉迪·海萨比
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艾拉迪·海萨比
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Publication of CN1179125A publication Critical patent/CN1179125A/en

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Abstract

本发明涉及用于电驱动的手工工具(1)尤其是雕孔锯和圆锯的安全装置,其中,电动机驱动通过离合圆盘和离合器(10)传递给装在工具支架(4)上的工具(5),此安全装置有一个带提升电磁铁控制器(HS)的电子传感器线路(SUS),当工具(5)与身体部分接触时,它通过电磁式地断开离合器(10)使驱动电机(8)与工具脱工。 Hand tool of the present invention relates to an electric drive (1), in particular a circular saw and hole saw carved security device, wherein the drive motor is transmitted to the tool mounted on the tool holder (4) through the clutch disc and a clutch (10) (5), this safety device has a controller with a lifting magnet (HS) of the electronic sensor circuit (the SUS), when the tool (5) in contact with the body part, it disconnects the clutch (10) by electromagnetically driving motor (8) and the tool off the work. 为保证在保障操作者安全的情况下能够方便地重新接合,建议此可断开的离合器设有可沿轴向移动或可沿径向摆动的离合器构件(13、16),它们借助于提升电磁铁(15)当其励磁时从建立力流的位置(11、25)移出/抬出。 To ensure the ability to easily re-engage in the case to protect the operator safety, this recommendation may be provided with disconnectable clutch or axially movable clutch member (13, 16) pivotable radially thereof by means of a lifting solenoid iron (15) when it is established from the position of the exciting force flux (11, 25) is removed / lifted out.

Description

电驱动的手工工具尤其是雕孔锯和圆锯的安全装置 An electrically driven hand tool, especially a circular saw and hole saw carved safety device

本发明涉及用于电机驱动的手工工具尤其是雕孔锯和圆锯的安全装置,其中,从电动机到工具的力流通过一个设在两者之间、可将传动轴、驱动电机和工具驱动轴之间的直接力流断开的具有离合器构件可脱开的离合器导通,离合器构件与提升电磁铁配合作用,后者可借助于一个可在工具与身体部分接触时活化的电子传感器励磁,断开离合器,并因而切断从电机到工具的连接。 The present invention relates to carving in particular a circular saw and hole saw safety device for a motor driven hand tool, wherein the force from the motor to flow through a tool provided therebetween, the transmission shaft, drive motor and tool drive direct the force flow between the shaft disconnect clutch member having a releasable clutch is turned on, the clutch member cooperates with the lifting magnet, which can be activated by means of a tool when in contact with the body portion electronic sensor field, to disengage the clutch, and thus cut off the connection from the motor to the tool.

这类工具安全装置应在使用者例如将手指伸入工具的工作区时保护这种机器的使用者。 Such tools such safety devices should protect the user's machine when the user workspace such as a finger into the tool. 若在这类工具上的安全装置当使用者例如将手指伸入工具工作区时应保护这种机器的使用者,那么这种锯,无论是圆锯还是雕孔锯,都可能造成严重的伤害。 If the safety device on the user of such tools when the user, for example when the finger into the machine tool workspace protect this, then this saws, circular saw or whether it is carved a hole saw, can cause serious injury . 当手指放在锯所在区内,尤其是由于电动机惯性运动没有达到工具无惯性地停止运转的目的,而特别是因为使用者反应延迟时,那么无论是圆锯还是雕孔锯都可能造成严重的伤害。 When the finger is placed where the Saw area, especially due to the inertia of the motor does not reach the tool to stop the movement of inertia operate without purpose, and especially since the user response delay, then either a circular saw or carve a hole saw can cause serious hurt. 为此,在DE-GM9109573中已经建议,为驱动装置设可分离的圆盘,当电路连通的传感器接收到一个身体电流,这一电流从工具通过例如手指(或其它身体部分)流回工具时,分离圆盘电磁地操纵使驱动装置与工具脱开,其中利用身体电流的技术采用例如高电阻的传感器是已知的。 For this reason, it has been proposed in DE-GM9109573, apparatus is provided for the detachable disk drive, when the communication circuit receives the sensor body into a current, the current flows back from the tool by a tool such as a finger (or other body part) of , separation of the discs electromagnetically actuating the tool drive means is disengaged, wherein the body using techniques employed in the current sensor, for example, high resistance are known. 若现在接收到一个身体电流,从而使电磁铁励磁,电磁铁回吸此分离圆盘,所以实现了电动机驱动装置与工具的分离,之后工具由于其磨擦无惯性地保持不动。 If now the body receives a current to the electromagnet is excited, the electromagnet suck back the separating discs, the separation is achieved with the motor driving device tool, after the tool due to its non-inertial friction to remain intact. 在雕孔锯中,在驱动装置与工具之间的离合器借助于驱动销完成从旋转运动转变为直线运动,驱动销可沿径向运动地装在分离圆盘上,并在一个与工具连接的固定在机器上的槽内导引。 In carving the hole saw, the clutch between the drive pin and the drive means of the tool from the completion of the rotational motion into linear motion, drive pin may be mounted radially movably on the separation disc, and a connection tool guide groove fixed to the machine. 若在这里采用按照DE-GM9109573的安全装置,虽然在出现接触时驱动装置可以与工具分离,然而重新连接非常麻烦,因为驱动销只能碰巧直接对准此槽并能插入。 Here, if employed, although driving means may occur upon contact separation safety device according to DE-GM9109573 and tools, however, it is very troublesome reconnection, since the drive pin can only happen in this groove and can be aligned directly inserted. 在圆锯中,按此建议,离合圆盘借助于一个设计成环形的提升电磁铁可沿轴向移动,使驱动装置与圆锯片脱开,并切断力流。 In a circular saw, this recommendation, the clutch discs by means of a lifting electromagnet designed as an annular axially movable, and the circular saw blade drive means is disengaged, and cut off the flow of force. 在这种情况下由于这种旋转的圆锯片有很大的扭矩,所以设附加的制动器,它设计为机械作用的摩擦制动器。 In this case, since the rotation of the circular saw blade that has a great torque, the additional brake is provided, which is designed as a mechanical friction brake action. 在这里直接重新连接只能在这种情况下才能达到,即,当一个或多个驱动销碰巧“对准”工具或工具支架的孔时。 Here again direct connection can only be reached in this case, i.e., when one or more drive pins happened to "align" the tool or tool holder when the hole. 在两种情况下,由于转速差很大,所以这种“对准”意味着重新连接将十分困难,尤其是为了保证无可指摘地传力,驱动销的直径必须选择为能达到与孔良好配合,再加上在许多工具中由于工具几何结构的原因,不可能采取任何措施将驱动销插入孔中。 In both cases, since the rotational speed difference is large, so that "aligned" means that reconnection will be very difficult, especially in order to ensure infallible force transmission, the diameter of the drive pin must be chosen to achieve good hole and cooperation, coupled with the tool because of the geometry, it is impossible to take any action in a number of tools to drive pins into the holes.

本发明的目的是进一步改进按DE-GM9109573的设备,使之在保持安全等级的情况下能够容易地重新连接。 Object of the present invention is to further improve the device according to DE-GM9109573, makes it possible to easily re-connected while maintaining the security level.

权利要求1说明了为达到此目的采用的方案,权利要求8说明了另一种方案;从属权利要求说明了有利的进一步改进和最佳实施形式。 The dependent claims illustrate advantageous further improvement and preferred form of embodiment; 1 to achieve the described embodiment used for this purpose, as claimed in claim 8 illustrates another embodiment as claimed in claim.

按本发明在一种设计中规定,提升电磁铁(直接或间接地)沿轴向移动驱动销。 In one design according to the invention provided that the lifting solenoid (directly or indirectly) axially movable drive pin. 为此,驱动电机的传动轴最好有一个设在工具的电动机一侧的离合圆盘,离合圆盘设有一些圆形的围绕其中心排列的止动位置,其中至少有几处与设计为驱动销或驱动鼻的离合器构件配合作用,驱动销或驱动鼻与工具通过其支架或通过其驱动轴持续啮合构成传力机构,提升电磁铁为了断开使离合圆盘/驱动销/驱动鼻轴向错动,它们至少插入几个止动位置中,以及,提升电磁铁具有逆其工作方向作用的机构,它在提升电磁铁励磁时被压紧,而在提升电磁铁去励磁时它取消由提升电磁铁引起的离合圆盘或驱动销的移位。 To this end, the driving motor of the motor shaft preferably has a clutch disc disposed on a side of the tool, the clutch disk is provided with a number of stop positions of the circular arrangement about its center, and which is designed to at least several a drive pin or drive clutch member cooperates with the nose, the nose and the driving pin or driving tools which drive shaft holder or by a configuration constant engagement force transmission mechanism, in order to enhance the solenoid OFF the clutch disc / drive pin / driver shaft nose the dislocation, they are inserted into at least some of the stop position, and a lift mechanism having an electromagnet acting against its working direction, which is compressed when lifting electromagnet excitation, and in the de-energized electromagnet lifting it canceled by Raising of the clutch discs or drive pin due to the electromagnet. 在这种情况下离合器的复位可通过一个制动销阻挡,所以为了复位首先必须手动释放此制动销。 In this case, the clutch may be reset by a brake pin block, so in order to reset the braking must first manually release the pin. 这样做的优点在于,在复位前必须找到触发安全装置的原因。 The advantage of this is that you must find the reasons for triggering a safety device before resetting.

由于驱动销通过其轴向移动与止动位置脱开而切断了力流,所以工具不受力而处于静止状态并因而不可能产生事故。 Since the drive pin through axial movement and stop position disengaged from the force flow is cut off, so that the tool is in a stationary state without force and thus can not produce an accident. 轴向运动由一个可通过一电子控制装置被出现的身体电流活化的设计为提升电磁铁的电磁铁引起,其中,驱动销与提升电磁铁的励磁状态无关持续地保持与工具或工具支架啮合。 Axial movement of a body can be obtained by activating the current design of the device appears to be due to an electronic control electromagnet lifting electromagnet, wherein the energization state regardless of the drive pin lifting electromagnet continuously kept engaged with the tool or tool holder. 在驱动装置的保护状态驱动装置脱开并处于静止状态的部分支承在传动轴上,与在传动轴对面的支承脱开,所以切断了直接的力流。 Partially disengaging the support means in a stationary state and the driving state of the protective device on the drive shaft, and the support shaft opposite the release, thus cutting off a direct force flow.

这种设计的第一种实施形式在于,至少设有一个固定安装的驱动销的工具或工具支架,设计成可在能轴向移动的离合圆盘旁与之同轴地自由旋转,驱动销在离合圆盘中的止动位置插入此止动位置中,在这种情况下提升电磁铁与离合圆盘以这样的方式配合作用,即,在提升电磁铁励磁时吸动离合圆盘,并使位于止动位置中的驱动销脱开。 This design of the first embodiment in that the tool or tool holder provided with at least a drive pin mounted a fixed, designed to be next to the clutch disc axially movable free to rotate coaxially therewith, the drive pin in the locking position clutch disc into this stop position, the lifting electromagnet and clutch disc in this case cooperates in such a manner that, when the lifting electromagnet excitation puff actuated clutch discs, and disengaging the drive pin is located in the stop position. 在这种实施形式中实现了驱动销与工具或工具支架持续地连接;当一个或几个驱动销从离合圆盘的止动位置拔出时传力中断;当一个或几个驱动销重新插入止动位置时实现重新连接。 In this embodiment, the drive pin to achieve a tool holder with a tool or continuously connected; when one or more of the drive pin is pulled out from the stop position of the clutch disc of the force transfer interrupt; if one or more drive pins reinserted when the stop position of the movable implement reconnection. 因为离合圆盘作为固定不动的机器部分设有布置在与轴线同心的圆上相应的止动位置,所以驱动销找到其中一个止动位置并被驱动,在这种情况下在工具或工具支架中的配合不起任何作用。 Since the clutch discs a machine part immobilized with corresponding stop positions are arranged on a circle concentric with the axis, wherein the driving pin to find a stop position and driven, in which case the tool or tool holder in with no effect. 因为在这种设计中,可沿轴向移动的离合圆盘起传力机构的作用,所以设置保证从传动轴至离合圆盘的力流的装置,例如平行于轴线的导槽。 Because in this design, the clutch disc axially movable force transmitting means acts along, so that the device is provided to ensure that the force flow from the drive shaft to the clutch disk, for example, parallel to the axis of the guide groove. 这种实施形式在这种情况下是有意义的,即当运动的工具一侧必须保持处于自由状态,例如在圆锯中。 This embodiment is significant in this case, i.e. when the tool side movement must remain in a free state, for example, in a circular saw. 离合圆盘的轴向移动借助于提升电磁铁在其励磁或去励磁时进行。 The axial movement of the clutch disc by means of a lifting electromagnet is in its de-energized or field. 驱动销与工具或工具支架连接,由于工具不可避免有磨损,所以最好与工具支架连接。 The driving pin is connected to the tool holder or tool, because the tool wear is inevitable, it is preferably connected to the tool holder.

这种设计的第二种实施形式中,设有一个可轴向移动的断开机构,它有至少一个驱动销、可以被自由带转以及安置在与驱动电机传动轴固定连接的离合圆盘和工具或工具支架之间并与它们同轴,断开机构设计成圆盘状,并最好有一个比离合圆盘大的直径,以及,提升电磁铁在伸出的圆周区设有旋转对称的磁场分布,其中,方向朝着工具或工具支架的驱动销可在工具或支架的孔中轴向移动,以及,驱动销设有朝离合圆盘方向的伸出段,它们与沿轴向固定的离合圆盘的止动位置配合作用,使提升电磁铁励磁时吸引断开机构,并使位于止动位置中的驱动销脱开啮合。 A second embodiment of this design, the disconnecting mechanism is provided with an axially movable, having at least one driving pin, may be freely transferred and disposed with the clutch disc and the driving motor shaft and fixedly connected between the tool or tool holder and coaxially with them, disconnecting mechanism designed into a disk shape, and preferably has a diameter larger than the clutch disc, and a lifting electromagnet with rotational symmetry in the circumferential region projecting magnetic field distribution, wherein a direction toward the drive pin of the tool or tool holder axially movable in the bore in the tool holder or, as well, provided with a drive pin projecting direction toward the clutch disc section, which are fixed with the axial direction stop position cooperates with the clutch disc, the suction means disconnecting the lifting electromagnet excitation, and a stopper driving pin situated in the disengaged position. 其中,一个或几个驱动销可以沿轴向移动,而离合圆盘相对于传动轴是固定的。 Wherein one or several drive pin axially movable, while the clutch disk is fixed relative to the shaft. 为了容纳驱动销(一个或几个),最好设一个可轴向移动的与驱动轴同轴、可以被自由带转的铁磁性断开机构,它与提升电磁铁配合作用,在提升电磁铁励磁或去励磁时轴向移动。 In order to accommodate the driving pin (or a few), it is preferably disposed coaxially with the drive shaft an axially movable, ferromagnetic tape can be freely turn disconnecting mechanism, which cooperates with the lifting magnet, electromagnet lifting axial movement of the excitation or de-excitation. 其中,在传动轴上运动的断开机构通过可移动的轴承支承,所以传动轴和断开机构可将力的传递脱开。 Wherein the disconnecting mechanism on the drive shaft by moving a movable bearing, so that the drive shaft and to transmit force disconnecting means may be disengaged. 尤其在有多个驱动销的情况下这种可移动的断开机构是有利的,因为这样可使驱动销在时间上同步运动,它们从止动位置拔出或重新插入止动位置。 In particular, such a movable disconnecting mechanism in the case where a plurality of driving pins is advantageous because it allows the drive pin moving synchronized in time, they are pulled from the stop position or stop position reinserted.

在一种设计形式中,断开机构设在与驱动电机传动轴固定连接的离合圆盘和工具或工具支架之间并设计为圆盘状,其直径大于离合圆盘的直径。 In one design, the disconnection mechanism is provided between the motor and the drive shaft fixedly connected to the clutch disc and the tool or tool holder and designed as disk-shaped, larger diameter than the clutch disc. 提升电磁铁在此伸出段有成对的磁极靴,它们产生一个旋转对称分布的磁场,使断开机构在其励磁或去励磁时移动,从而使驱动销或插入离合圆盘的止动位置中或从止动位置拔出。 The lifting magnet segment has a pair of projecting pole piece, a magnetic field which generates rotational symmetrically distributed, the off mechanism which moves when the excitation or de-energized, so that the driving clutch disc is inserted or a pin detent position or removed from the stop position. 朝向工具或工具支架方向的驱动销沿轴向可在工具或工具支架的孔中移动;它们还制有朝离合圆盘方向的伸出段,伸出段与沿轴向固定在驱动电机传动轴上的离合圆盘中的止动位置配合作用。 The direction towards the tool holder or tool drive pin axially movable in the bore of the tool or tool holder; they are also formed with projecting direction toward the clutch disc section, the upper section protruding axially fixed in the drive motor shaft stop position cooperates with the clutch disc.

在另一种可供选择的设计形式中,断开机构设在工具或工具支架背对着与驱动电机传动轴固定连接的离合圆盘的那一侧并设计成圆盘状,它有一个至少与止动位置的圆直径相等的直径。 In another alternative design form, the disconnecting mechanism provided on the tool or tool holder on the side facing away from the clutch disc of the drive motor shaft and fixedly connected to a disc-shaped design, which has at least a with a diameter equal to the diameter of the stop position. 提升电磁铁同心地安置在此圆盘的所在区内,并与此断开机构配合作用,在提升电磁铁励磁时断开机构沿轴向移动。 Area where the lifting electromagnet disposed concentrically in this disc, and cooperates with this mechanism is disconnected, disconnecting the lifting means electromagnet excitation in the axial direction. 方向朝着工具或工具支架的驱动销可沿轴向在工具或工具支架的孔中移动,所以它们穿过工具或工具支架与离合圆盘的止动位置在插入时配合作用。 A direction toward the drive pin tool or tool holder is movable in the bore of the tool or tool holder in the axial direction, so that they pass through the stop position of the tool or tool holder cooperates with the clutch disc when inserted.

在这种结构中,一个或几个驱动销通过工具或工具支架导引,使它们能沿轴向移动并与之持续啮合;此时从驱动电机到工具的力流通过离合圆盘在其与驱动销配合作用时建立。 In this configuration, one or more drive pin by a tool or tool holder guide, so that they can move axially and in continuous meshing engagement therewith; at this time from the drive motor to the tool in the force flow through the clutch disc with establishing the driving pin cooperates. 若在提升电磁铁未励磁时断开机构在“工作位置”,则一个或几个驱动销在离合圆盘工具一侧插入一个或多个止动位置中并被驱动。 If the disconnect mechanism at the unexcited electromagnet lifting "operating position", the one or more driving pins in the tool side of the clutch disc insertion of one or more stop positions and driven. 若传感器确定有一个从工具经外部的线路段的漏电流,在这里涉及经使用者的身体,则提升电磁铁励磁,它将断开圆盘吸动至其“安全位置”,以及驱动销抽回,使驱动销从止动位置滑出以及驱动装置与工具脱开,但它们留在工具中,所以重新连接只需要将驱动销再插入止动位置中。 If the sensor determines that there is a leakage current through the external line segment, here relates to the user's body from the tool, the lifting electromagnet excitation, it disconnects the movable suction disc to its "safe position", and a drive pin pumping back to the driving pin from slipping out of the stop position of the tool and the drive means is disengaged, but they remain in the tool, so only need to reconnect the drive pin and then insert the stop position.

具有旋转运动的手工工具例如圆锯,断开机构最好旋转对称地分布三个驱动销,而离合圆盘至少有三个按同样方式分布的止动位置,不过止动位置最好设两个或三个止动位置组,在驱动销旋转时经小于60°的转角便已经找到了第一个啮合可能性。 Hand tool such as a circular saw having a rotating motion, the rotational disconnecting mechanism preferably symmetrically distributed three drive pins, and the clutch disc has at least three detent positions distributed in the same manner, but the position of the stop is preferably provided two or group three stop position, the rotational angle when the driving pin through less than 60 ° would have been found first engagement possibilities. 对于具有直线运动的手工工具,例如雕孔锯或狐尾锯,断开机构最好有一个驱动销,而离合圆盘至少有一个止动位置;止动位置最好设多个止动位置组。 For the hand tool having a linear movement, for example, Boring foxtail saw or a saw, preferably with a disconnecting mechanism drive pin, while the clutch discs have at least one stop position; the position of the stop is preferably provided a plurality of detent positions Group . 在这种情况下止动位置例如按60°角向距离布置,在这里最多转动一个60°角便足以为驱动销提供第一个啮合可能性;若设置双倍数量的止动位置,保持角向距离为30°,三倍数量时此角向距离为20°,这就足以避免工具的故障。 E.g. stop position by 60 ° angular distance is arranged in this case, where a maximum of rotation angle of 60 ° is sufficient to provide for the possibility of engaging the first drive pin; if set double the number of stop positions, holding angle the distance of 30 °, three times the amount of time this angular distance of 20 °, which is sufficient to avoid malfunction tool. 为驱动销配设的止动位置构成一个止动位置组,一组可设两个或多个止动位置。 Stop position of the drive pin is provided with a stop position constituting the group, provided a set of two or more stop positions. 为了降低旋转工具中储存的转动能量,在这里最好设制动器。 In order to reduce the rotational energy stored in the rotary tool, there is preferably provided in the brake.

最后,在第三种实施形式中,设有一个可轴向移动的断开机构,它有至少一个驱动销、可以被自由带转以及安置在工具或工具支架背对着与驱动电机传动轴固定连接的离合圆盘的那一侧并与它们同轴,断开机构设计成圆盘状,并有一个至少与止动位置的圆直径相等的直径,以及,提升电磁铁同心地安置在断开机构的所在区内,其中,方向朝着工具或工具支架轴向可移动的驱动销,可沿轴向在工具或支架的孔中移动,并穿过工具或工具支架与离合圆盘的止动位置配合作用,使提升电磁铁励磁时吸引断开机构,并使位于止动位置中的驱动销脱开。 Finally, in the third embodiment, the disconnecting mechanism is provided with an axially movable, having at least one driving pin, may be freely transferred and disposed with the tool or tool holder back to the fixed shaft and the drive motor clutch disc connected to the side of and coaxially with them, disconnecting mechanism is designed disc-shaped and has a diameter of diameter at least equal to the stop position, and to enhance the electromagnet disposed concentrically in the open institution region, wherein the direction of the movable holder or the tool in the hole in the axial direction towards the tool or the tool holder axially movable drive pin, and passes through the stop position with the tool or tool holder disk clutch complexation, the suction means disconnecting the lifting electromagnet excitation, and the drive pin is located in the stop position of disengagement. 其中,断开机构借助于一个压力弹簧压到“工作位置”,所以在离合圆盘旋转时可以实现插入,在这种情况下最好沿旋转方向的前方设进入斜面,它们防止驱动销生硬地插入止动位置中,所以可以无撞击地提高插入的可靠性和减少磨损。 Wherein the disconnecting mechanism by means of a compression spring to press "operating position", can be achieved when the clutch disc is inserted into the rotation, in this case forward rotational direction is preferably provided into the inclined surface, they prevent the drive pin stiffly insertion stop position, can be inserted without striking increase reliability and reduce wear.

采用这一(借助于此实施例说明的)设计,可以在驱动销离开其在止动位置中的位置时,断开驱动电机到工具的力流;因为驱动销与工具或工具支架保持啮合,所以只要驱动销重新插入止动位置中便可以方便地重新建立力流,为此作反向的轴向运动便足够了。 When using this (by means of the embodiment described in this example) designed to leave its position in the stop position of the driving pin, disconnect the power flow to the motor driving the tool; because the drive pin and the tool or tool holder remains engaged, so long as the drive pin reinserted stop position can be easily re-establish the force flow, for axial movement to invert sufficient. 为了获得可靠的啮合,止动位置设计为在离合圆盘中工具一侧的凹穴,它们最好具有沿离合圆盘旋转方向在前面的进入斜面。 To obtain reliable engagement, designed as a stop position in a side pocket tool clutch discs, they preferably have a clutch disc along the rotational direction in front of the entry ramp. 驱动销可以在提升电磁铁取消励磁时重新插入这些在工具一侧的止动位置中,无需为此而使驱动电机停车;这种驱动电机的“旋转”允许驱动销找到一个止动位置,为此所需要的力由逆提升电磁铁工作方向作用的机构产生,在提升电磁铁励磁时这一机构被压紧,在提升电磁铁去励磁时这一机构取消由提升电磁铁引起的离合圆盘或驱动销的移位。 Reinserting these side stop position of the tool, that end of the drive motor need not stop the drive pin can cancel the lift solenoid excitation; such drive motor "spin" to allow the drive pin to find a stop position for the this force is required by the inverse lifting electromagnet generating mechanism acting working direction, the lifting mechanism is pressed when the electromagnet is excited, the clutch disc cancellation mechanism caused by lifting the lifting electromagnet de-energized electromagnet or drive pin displacement.

另一种设计在于,至少一个离合器构件沿径向可运动地铰接在驱动电机的传动轴上或工具的驱动轴上,每一个离合器构件总是在另一根轴的端部所在区内有一个驱动鼻,用于将这两个轴端传力地和形状相配地然而可脱开地连接起来;以及,工具的驱动轴或驱动电机的传动轴有一些沿圆周分布的槽,它们与一个或多个离合器构件配合作用,使提升电磁铁去励磁时,为了建立力流它们与离合器构件啮合,在提升电磁铁励磁时,为断开力流它们与离合器构件脱开啮合。 Wherein another design, the at least one clutch member radially movably hinged on a drive shaft on the drive shaft of the drive motor or tool, each one clutch member always has a zone in the other end of the shaft is located drive nose for force transmission to the two axial ends and shaped for mating, however releasably connected; and a motor shaft or drive shaft has some tools circumferentially distributed grooves, which are associated with one or a plurality of clutch member cooperates, so that the lifting electromagnet de-energized, in order to establish a force flow which engage with the clutch member, when the lifting electromagnet excitation, and the clutch member are disengaged to disconnect the engagement force flow. 止动位置最好按最大120°的角向间距布置;实际上此角向距离为90°和60°证明是可靠的。 Stop position is preferably disposed according to an angle of maximum spacing of 120 °; in fact this angular distance of 90 ° and 60 ° proved to be reliable. 为了变换运动,驱动销/驱动鼻通过径向运动从占用的止动位置抬出,从而断开力流,排除了例如伤害手或手指的危险。 In order to transform the movement, the drive pin / driver carried away by the radial movement of the nose from a position occupied by the stopper, thereby disconnecting the force flow, to exclude the risk of injury, for example, hand or finger. 这种径向运动这样实现,即,提升电磁铁与一个环形地围绕着工具驱动轴的断开环配合作用,后者面朝电动机传动轴端一侧斜削成楔形,以及,离合器构件位于此楔面所在区的端部,斜削成与之相应的斜面,使得在提升电磁铁励磁时断开环嵌入这些端部的下方,并使端部抬出以便脱开在两根轴之间的传力的或形状相配的连接,其中,提升电磁铁有逆其工作方向作用的机构,在提升电磁铁励磁时它们被压紧,而在提升电磁铁去励磁时它们取消由提升电磁铁引起的驱动鼻(一个或多个)的移位。 This radial movement is achieved in that, a lifting electromagnet with an annular ring surrounds the disconnect cooperates tool drive shaft, which side facing the tapered end of the motor shaft into a wedge, and a clutch member located in this region where the end portion of the wedge surface, into a beveled ramp corresponding thereto, such that upon lifting the lower electromagnet excitation OFF embedding these ends, and carried away to disengage the end portion of the shaft between two form-fitted or force-transmitting connection, wherein the lift mechanism has an electromagnet acting against its working direction, which is compressed when lifting electromagnet excitation, and when they lift the electromagnet de-energized electromagnet cancellations caused by lifting driving nose (one or more) displacement. 在这种设计中,断开环在离合器构件的斜面上滑动,所以它们如同一个斜面的作用将离合器构件的与这些斜面的相配端“抬出”,离合器构件可作为单臂杠杆将驱动鼻从止动位置滑出。 In such a design, the inclined surface of the clutch ring in the disconnect member slides as they effect a ramp clutch member mating with the bevels of the end "carried away", the clutch member of the drive can be used as a lever-arm from the nose slipping stop position. 这种传动装置保证以强制的机械的方式将止动鼻从止动位置抬出,所以在这里也能达到可靠地切断力流和使工具静止。 Such a transmission so as to ensure that the mechanical force of the stopper nose carried away from the stop position, where it can be reliably cut to achieve flow force and the tool rest.

尤其在旋转的工具中,可能储存有很大的转动能量,最好设一个可由提升电磁铁触发的制动装置。 In particular, rotation of the tool, it may have a large rotational energy stored, preferably provided by a lifting magnet braking device is triggered. 这样一种制动装置最好由一个与工具或工具支架连接的制动十字架和多个与提升电磁铁或其衔铁连接的制动止挡构成,在提升电磁铁励磁时制动止挡可摆入十字架的旋转圆内。 Such a cross brake braking device is preferably connected with a tool or a tool holder and a plurality of electromagnets or brake the lift stop connected to the armature configuration, when the brake lifting electromagnet excitation can swing stop rotation of the inner circle of the cross. 这些摆入旋转区内的臂制止了进一步的旋转运动并使工具停止。 The area put into rotation arm to stop the further rotational movement and the tool stops. 不言而喻,这些臂与制动十字架一样,设计为使它们能承受得住在制动时产生的最大的力。 It goes without saying, the brake arms cross, is designed to enable them to withstand the maximum force generated during braking. 为此,制动十字架的臂和/或制动止挡具有沿旋转方向加长的矩形剖面;为了缓和在止挡时产生的激烈撞击,它们最好在止挡部位所在区设弹性缓冲件。 For this reason, the brake arm of the cross and / or braking stop has a rectangular cross section elongated in the rotational direction; intense order to alleviate the impact generated when the stopper, provided they are preferably located in the region of the damper gear stopper portion.

为了使驱动销/驱动鼻、离合圆盘或断开机构在安全装置触发后能重新运动到其静止位置,设逆提升电磁铁工作方向作用的机构,它在提升电磁铁励磁时被压紧,而在提升电磁铁去励磁时它取消离合圆盘或驱动销由提升电磁铁引起的移位,此机构最好由至少一个压力弹簧构成;这一压力弹簧在提升电磁铁励磁时被压紧,在提升电磁铁去励磁时重新释放出存储在它里面的能量,此时,驱动销/驱动鼻、离合圆盘或断开机构回移到静止位置,由此重新建立连续的力流。 To the driving pin / driver nasal, or disconnect clutch discs after the safety device trigger mechanism capable of moving back to its rest position, the lift mechanism disposed against the working direction acting solenoid, which is compressed when lifting electromagnet excitation, and when lifting the electromagnet de-energized or it cancels the clutch disc drive pin displacement caused by the lifting electromagnet, this mechanism is preferably constituted by at least one compression spring; the compression spring is compressed when lifting electromagnet excitation, when lifting the electromagnet de-energized again release the energy stored in it, in which case, the drive pin / driver nasal, or disconnect clutch discs mechanism moved back into the rest position, thereby re-establishing the continuous flow of force. 作为在去励磁时被压紧的压力弹簧,也可以是一种支持断开运动的弹簧;这尤其在这种情况下具有重要意义,即,随着断开运动还必须同时起动制动装置。 As the compression spring is compressed when the de-excitation, also be a support opening spring movement; This is particularly important in this case, i.e., as the opening movement must also activate the braking device.

用于此安全装置的开关机构最好有一个传感器,它输出一个检测电压,此检测电压一方面通向手工工具的手柄,另一方面通向运动的工具,传感器有一个识别这两个输出之间电流的元件,它与一个开关元件配合作用接通一个用于提升电磁铁的电流回路。 The switching mechanism for the security device preferably has a sensor which outputs a detection voltage, the detection voltage of this aspect of the handle leading to the hand tool, on the other hand leads to movement of a tool, there is a recognition that the sensor outputs of two between the current element, which cooperates with a switching element for a lifting electromagnet current loop. 传感器的这一原理在原则上不是新的,它例如用在电梯中,以便发出信号。 The principle of the sensor is new in principle, it is for example in an elevator, to signal. 应用在手工工具中时,它可以识别在运动的工具和手柄之间通常经使用者身体的短路。 When used in hand tool that can identify the user's body is typically a short circuit between the tool and the movement of the handle. 这一识别导致接通提升电磁铁的励磁电路,至于提升电磁铁在工作位置究竟是励磁还是去励磁以及在安全位置正相反,原理都是一样的。 This recognition led to the excitation circuit switched lifting electromagnets, as to enhance the electromagnets in the working position is exactly the opposite excitation or de-energized and in a safe place, the principle is the same. 最好这样工作,即,提升电磁铁在工作位置去励磁,而驱动销借助于压力弹簧保持啮合。 Preferably this work, i.e., in the working position lift the electromagnet de-energized, and the driving pin engagement holding means of the pressure spring. 传感器识别出一个身体电流,提升电磁铁励磁,它产生吸力并断开力流。 Identifying a current sensor body, lifting electromagnet excitation, and disconnect it generates a suction force flow.

为了能将偶然短路与可能带来危险的持久的短路区别开来,在开关元件前连接有一延时元件。 To be able to accidentally short-circuited with a short-circuit may bring lasting distinguish dangerous apart, a delay element is connected before the switching element. 若短路持续了多个脉冲,则开关元件的逻辑电路以将遭受危险为出发点,接通提升电磁铁的电路。 If a plurality of short circuit duration pulses, the logic circuit switching element to at risk as a starting point, the electromagnet is turned on to enhance the circuit. 根据工作方式,这一电路从去励磁转变为励磁或反之,并在这种情况下沿轴向或移动离合圆盘或断开机构,使驱动销从找到的止动位置滑出,从而断开从驱动电机到运动的工作的力流,必要时在附加的制动器的作用下使工具快速静止。 The mode of operation, the excitation circuit from going into the field or vice versa, and in this case the axial movement of the clutch or disc or disconnecting mechanism, the drive pin from slipping out of the stop position found to disconnect from the driving motor to the working movement of the flow of force, if necessary, under the action of the tool additional stationary brake quickly.

为了使使用者通过检测电压可靠地脱离危险,传感器将检测电压在电流上与电源电压分开。 In order to enable a user to reliably danger by detecting the voltage, the detection voltage sensor is separated from the supply voltage to the current. 在这种情况下产生一个直流电压,它的电压低于危险极限电压;直流电压最好小于42V,尤其是使用24V。 In this case, generating a DC voltage, which voltage is lower than the risk limit voltage; preferably less than 42V DC voltage, especially with 24V. 作为检测电压本身最好采用脉冲式电压,它具有的脉冲频率至少为0.5KHZ。 Itself is preferably used as a detection voltage pulse voltage having a pulse frequency of at least 0.5KHZ. 这意味着是这样一种传感器脉冲序列,即,脉冲间隔小于2ms,其中应注意的是,伤害的危险不是来源于工具的工作速度,而是机器的送进速度。 This means that the sensor is a pulse train, i.e. the pulse interval is less than 2ms, which should be noted that the risk of injury is not derived from the work tool speed, but the feeding speed of the machine. 为了有足够的识别可靠性,脉冲最好设计为它的峰值电压至少达到1KV。 In order to have sufficient recognition reliability, the pulse is preferably designed as at least its peak voltage 1KV. 这一峰值电压对于手工工具的使用者没有任何危险,因为在偶然接触时由于(导线)电容小转变的能量小。 This peak voltage without any danger for the user of the hand tool, because due to the energy (wire) small low capacitance change upon accidental contact. 为了避免无线电干扰,导引传感器脉冲的连接导线设计为屏蔽线。 To avoid radio interference, the pulse sensor connected to the guide wire is designed to shield line. 在这种情况下由此得到的附加的导线电容可以保持,它不会将决定危险性的放电能量抬高到超出极限,因为导线长度较短所以附加的导线电容太小了。 Additional lead capacitance in this case thus obtained can be maintained, it does not decide to raise the risk of discharge energy beyond the limit, because the shorter length of wire so that an additional lead capacitance is too small. 这一脉冲电压还针对了一种高电阻的外部短路,例如在带有工作手套时造成的外部短路。 This pulse voltage is also directed to an external short-circuit of a high-resistance, such as an external short circuit at the time of work with gloves.

下面借助于在图1至10中表示的实施例详细说明本发明;其中:图1具有可轴向移动的离合圆盘的安全驱动装置示意图;图2具有可轴向移动的断开机构的安全驱动装置示意图,断开机构在离合圆盘和工具或工具支架之间;图3具有可轴向移动的断开机构的安全驱动装置示意图,断开机构在工具或工具支架和离合圆盘之外;图4具有安全驱动装置的雕孔锯前视剖视图;图5具有安全驱动装置的雕孔锯侧视剖视图,驱动装置接通;图6具有安全驱动装置的雕孔锯侧视剖视图,驱动装置断开;图7具有安全驱动装置的圆锯侧视剖视图,驱动装置断开;图8具有安全驱动装置的圆锯侧视剖视图,驱动装置连接;图9沿止动位置所在高度通过工具驱动轴端部的剖面图;以及图10工作线路示意图。 The present invention is described in detail in the embodiment shown in FIG below with reference to 110; wherein: Figure 1 a schematic view of safety driving apparatus having an axially movable clutch disk; FIG. 2 is a safety disconnect mechanism axially movable a schematic view of the drive means, the disconnecting mechanism between the clutch disc and the tool or tool holder; FIG. 3 a schematic view of safety disconnection mechanism driving means axially movable, outside the tool or tool holder and disconnecting mechanism in the clutch disc ; 4 Boring safe driving device of FIG serratus anterior sectional view; saw a side sectional view of FIG. 5 Boring safe driving means, the driving means is turned on; Fig. 6 saw a side sectional view carving holes having a safety drive means, the drive means OFF; Fig. 7 a side sectional view of a circular saw having a safety drive means, the drive means are open; FIG. 8 having a side sectional view of the circular saw safety drive means, the drive means; FIG. 9 is located along the height of the stop position by the tool drive shaft a cross-sectional view of an end portion; and Figure 10 a schematic view of the working line.

图1至3示意表示了一些设计,具有一个可沿轴向移动的离合圆盘10(图1),具有在离合圆盘10与工具5或工具支架4之间的断开机构12(图2)以及具有在工具5或工具支架4和离合圆盘10之外的断开机构12(图3)。 1 to 3 schematically represent some design, having one axially movable clutch discs 10 (FIG. 1), having to disconnect the clutch discs 10 and the mechanism between the tool holder 5 or 412 (FIG. 2 ) and a disconnecting mechanism 5 in addition to the tools or tool holder 4 and 12 of clutch disc 10 (FIG. 3). 在所有三种情况下,驱动电机8(图4-8)传动驱动电机传动轴9,传动轴9本身将旋转运动传递给离合圆盘10。 In all three cases, the driving motor 8 (Figures 4-8) a transmission shaft drive motor 9, the drive shaft 9 is transmitted to a rotational movement itself clutch discs 10. 离合圆盘10设有止动位置11,驱动销13插入止动位置11中。 Clutch discs 10 is provided with a stop position 11, the drive pin 13 is inserted into the stop position 11. 这些驱动销13平行于轴线地装在工具5或工具支架4上,使它们位于离合圆盘10的止动位置11所分布的圆上。 The drive pin 13 parallel to axis 5 mounted on the tool or the tool holder 4, so that they are located on a circle stop position 11 of clutch discs 10 are distributed. 在此实施形式中,离合圆盘10可在传动轴9上沿轴向移动,为此设有导槽9.1,所以,在提升电磁铁15励磁时可以轴向移动离合圆盘10。 In this embodiment, the clutch discs 10 axially on the drive shaft 9 is moved, for this purpose provided with a guide groove 9.1, so that, when the lifting magnet 15 field 10 is axially displaceable clutch disc. 在这样的励磁引起的移位时压力弹簧14被压紧,并保证在去励磁时离合圆盘10重新回到其原始位置。 Compression spring 14 is compressed due to the shift of such excitation, and to ensure clutch discs 10 resumes its original position when de-energized. 在这种情况下装在工具5或工具支架4上的一个或多个驱动销13插入止动位置11中,或从止动位置11抽回,从而使力流或建立或断开。 In this case, a downloading tool on the tool holder 4 or 5 or more drive pin 13 is inserted into the stopper 11 in position, or withdrawn from the stop position 11, or such that the flow of force established or broken. 在图1中提升电磁铁15与离合圆盘10配合作用,其中,离合圆盘10可在传动轴9上沿轴向运动,传动轴9在这里还制有导槽9.1。 Lifting electromagnet 10 interacts with the clutch disc 15 in FIG. 1, wherein the clutch discs 10 axially movable on the drive shaft 9, the drive shaft 9 is also here formed with a guide groove 9.1. 在其它两种实施形式中,离合圆盘10固定安装在传动轴9上,以及,一个设有一个或多个驱动销13的断开机构12与传动轴9同轴地设置,并设计为,使平行于轴线地固定在此断开机构上的驱动销13能与离合圆盘10的止动位置11配合作用。 In the other two forms of embodiment, the clutch discs 10 fixedly mounted on the drive shaft 9, and a disconnecting mechanism has a plurality of drive pins 13 or 12 is disposed coaxially with the drive shaft 9, and is designed, the fixing parallel to the axis 13 can be driven pin 11 cooperates with detent means on the clutch discs 10 in the position of this disconnection. 在按图2的实施形式中,断开机构12位于离合圆盘10和工具5或工具支架4之间,并可被提升电磁铁从离合圆盘10处移开,所以驱动销13的伸出段13.1从止动位置11拔出。 In the embodiment according to FIG. 2, the disconnect mechanism 12 and clutch discs 10 positioned tools between the tool holder 4 or 5, and may be removed from the lift solenoid clutch discs 10, the driving pin 13 projecting 13.1 segment 11 is pulled out from the stop position. 在此运动过程中,作为复位机构的压力弹簧14被压紧,在提升电磁铁15去励磁时压力弹簧将断开机构12置于其原始位置,并因而可使力流重新建立。 During this movement, the compression spring 14 is pressed as a reset mechanism, when lifting pressure solenoid 15 de-energized the spring 12 will disconnect means into its original position, and thus can re-establish the flow of force. 在图3所示的实施形式中,断开机构12和提升电磁铁15安排在工具5或工具支架4和离合圆盘10之外。 In the embodiment shown in FIG. 3, the disconnect mechanism 12 and an electromagnet 15 arranged in the lifting tool 5 or the tool holder 4 and outside clutch discs 10. 这一结构允许驱动销13穿透工具5或工具支架4到达离合圆盘10,所以在这里驱动销13的端头可以插入离合圆盘10的止动位置11中,在这种情况下此啮合可通过提升电磁铁15取消。 This structure allows the drive pin 13 penetrating tool 5 or the tool holder 4 reaches the clutch discs 10, so here the drive pin 13 can be inserted into the end position of the stopper 11 of the clutch disk 10, in this case this engagement It can be canceled by lifting electromagnet 15. 压力弹簧14在提升电磁铁15励磁时被压紧,所以在去励磁时将断开机构12移回其原始位置。 Compression spring 14 is compressed when lifting the electromagnet 15 is excited, so that when de-energized to disconnect mechanism 12 back to its original position.

图4至6表示通过具有安全驱动装置的雕孔锯的前剖视图(图4)和侧剖视图,其中一个是销子离合器脱开(图5),另一个是销子离合器连接(图6)。 4 to 6 shows a front cross-sectional view (FIG. 4) having a hole saw safety actuation carved apparatus and a side cross-sectional view, where a clutch pin is disengaged (FIG. 5), the other clutch is connected to the pin (FIG. 6). 在机器1的视图中可以看出带手柄3的外壳2,还可见所表示的工具5,这里是雕孔锯条。 In view of the machine 1 can be seen in the housing 2 with a handle 3, also visible tool 5 represented here is carved hole saw blade. 工具5固定在工具支架4上并处于运动之中,设在机器1下方的垫板6可以为机器1整齐地导引。 5 is fixed to the tool 4 and the tool holder in motion, the machine 1 is provided below the plate 6 can be neatly guiding the machine 1. 运动由驱动电机8引起,电机的传动轴9与一个传递给锯条支架4运动的销子离合器配合作用。 Motion caused by the driving motor 8, the motor shaft 9 is transmitted to the pin and a clutch blade holder 4 cooperates movement. 此销子离合器由离合圆盘10构成,离合圆盘10制有止动位置11,驱动销13的自由端插入止动位置11中,驱动销13固定在一个可沿轴向运动的断开机构12上。 This pin consists of clutch discs 10 of the clutch, the clutch disk 10 is formed with a stop position 11, the free end of the drive pin 13 is inserted into the detent position 11, the drive pin 13 is fixed to a disconnecting mechanism moving axially 12. 断开机构的轴向运动由提升电磁铁15引起,后者设在雕孔锯背对驱动装置的一侧。 Disconnecting mechanism causes axial movement of the electromagnet 15 by the lift, which is provided at a side opposite to the hole saw carved driving device. 机器在手柄3上操纵,在手柄的恰当位置上有一个传感器电极3.1,它与安全线路电连通,在操作机器时在它上面支靠着自由的皮肤表面。 Manipulation of the handle 3 in the machine, a sensor electrode 3.1 in position on the handle, communicating with the electrical safety circuit, when operating the machine on it bears against the free surface of the skin. 形成力流的销子离合器由离合圆盘10构成,它与通过工具5的支架4导引并插入止动位置11中的驱动销13配合作用,驱动销13装在断开机构12上,在提升电磁铁15去励磁时驱动销13可通过支架4中的销子孔导引沿轴向移动并插入离合圆盘10的其中一个止动位置11中。 Formed the force flow is constituted by a clutch pin clutch discs 10, 13 which cooperate with the guide 5 through the tool holder 4 is inserted into the stop position and the drive pin 11 is acting, the drive pin 13 mounted on the disconnecting mechanism 12, the the drive pin 13 can be guided through the pin hole in the holder 4 is inserted axially moving the clutch disc and wherein a detent position 10 of the lift 11 in the electromagnet 15 de-energized. 电磁铁励磁时吸引断开机构12并使之沿轴向从离合圆盘10移开,所以驱动销13从止动位置11拔出,力流因而中断。 When the electromagnet excitation suction means 12 is disconnected and allowed to axially away from the clutch discs 10, 13 so that the drive pin 11 is pulled out from the stopper position, and thus the force flow interruption.

图7和8表示具有可沿径向移动的离合器构件的安全装置另一种设计,离合器构件设计为(单臂式)离合杠杆16;图9表示在止动位置25所在高度通过工具驱动轴7端部的剖视图。 7 and 8 show a further security device having a clutch member may be moved radially of the design, the clutch member is designed as a (single arm type) of the clutch lever 16; FIG. 9 shows a position where the stopper 25 by the height of the tool drive shaft 7 a cross-sectional view of an end portion. 离合杠杆借助于铰链16.1铰接在驱动电机8传动轴9的端部,使它们可以摆动,在这种情况下驱动鼻17沿径向移动。 The clutch lever is moved in the radial direction end portion of the drive shaft 9 of the motor 8, so that they can swing, in this case driven by means of a hinge 17 in the nose 16.1 is hinged. 离合杠杆16与铰链16.1的相对端制有上升斜面18,在此上升斜面下方夹住断开环19,断开环19在工具5驱动轴5.1上的导槽19.1中被导引。 The clutch lever 16 and the opposite end 16.1 of the hinge system are rising sloped surface 18, this rising sloped downward clamping ring 19 is disconnected, the disconnected guide ring guide groove 19 in the tool 5 19.1 5.1 of the drive shaft. 断开环19作为衔铁与提升电磁铁15配合作用,在后者励磁时吸引断开环19,并将其压入上升斜面18下方,使离合杠杆16的自由端抬起。 Disconnect ring 19 as the armature 15 cooperates with the lifting magnet, suction ring 19 is disconnected in the latter field, and pressed downward into the rising inclined surface 18, the free end of the clutch lever 16 is lifted. 驱动鼻17如在一个单臂杠杆中一般的情况那样随之抬起并从止动位置25滑出。 The nose 17 is generally driven in a single-arm lever in the case that will lift and slide 25 from the stop position. 因此传动轴9和工具驱动轴7之间的离合器断开。 Thus the drive shaft 9 and the tool drive shaft between the clutch 7 is turned off. 为了使驱动鼻17平稳地进入止动位置25中,在止动位置25一侧掏空成进入斜面的形式,此斜面设在沿旋转方向的前方。 In order to smoothly drive the nose 17 into the detent position 25, in front of the stop position into the hollowed out to form the inclined surface 25 side, the inclined surface provided in the rotation direction. 随着断开环19被吸引,在这里电磁铁去励磁时被压紧的弹簧14卸压,所以弹簧支持断开环19的运动。 With the disconnect ring 19 is attracted to the electromagnet when this is pressed excitation relief spring 14, so that movement of the spring support ring 19 is disconnected. 随着断开环的这一运动,同时起动制动器20。 As this movement of the ring off, brake 20 simultaneously start.

在这里为了看得更清楚作了简化表示的制动器20由一个固定安装在工具5轴7上的制动十字架21构成,它与固定在提升电磁铁上的制动臂22配合作用。 Here in order to see more clearly the brake 20 is made by a simplified representation of a brake fixedly mounted on the shaft 75 of the tool 21 constituting the cross, it is fixed in the lifting arm 22 with the braking electromagnets. 这些制动臂22可摆动地支承在一个同样固定在提升电磁铁上的轴承22.1上,在提升电磁铁15励磁时它们摆入制动十字架21的旋转圆中。 The brake arm 22 is pivotably mounted in a bearing on the lifting likewise secured 22.1 on the electromagnet, the electromagnet 15 when lifting the brake put into the field they cross the circle of rotation 21. 设在旋转的制动十字架21上的制动止挡21.1与静止的制动臂22配合作用,使制动止挡与制动臂的弹性缓冲器23相遇并在那里使它们停下来。 Brake to the rotation of the brake on the cross stop 21 21.1 22 cooperates with a stationary brake arm, the elastic stop buffer brake the brake arms 23 so that they meet and stop there.

最后图10表示了起动安全装置的电子线路的示意工作线路图。 Finally, FIG. 10 shows a schematic view of the starter of the working line of the electronic circuit of the safety device. 电源电压通过设有电源开关N1的导线L1进入此机器,机器由传感器监控线路SS监控和操纵。 Enter the machine power supply voltage through a wire L1 N1 is provided with a power switch, sensor-monitored line SS machine monitor, and control. 此传感器监控线路将电压进一步通过导线L3传输给带驱动电机8转速调节器DS的电动机控制器MS,通过导线L2传输给脉冲发生器I1,脉冲发生器I1产生用于传感器的电压,尤其是高压脉冲,脉冲通过导线L6输入工具5。 This further sensor monitors the line voltage to the motor with a drive motor controller 8 MS DS L3 of the speed controller by transmission wires, a sensor for generating a voltage by a transmission line L2 of the pulse generator I1, pulse generator I1, in particular a high pressure pulse, pulse input means 5 through the wire L6. 反向电压,通常是接地,通过导线L5加在传感器电极3.1上。 Reverse voltage, usually ground, via a line L5 applied to the sensor electrode 3.1. 经由工具5和传感器电极3.1的电流活化在传感器监控线路SS中的监控线路,并通过导线L4经提升电磁铁控制器HS使提升电磁铁励磁;提升电磁铁15因而产生吸力,并通过离合器的脱开中断从驱动电机8到工具5的力流。 Activated via the current tool and the sensor electrode 5 3.1 supervisory circuitry in the sensor monitoring SS line, via a line L4 and lifting by the lifting magnet controller HS electromagnet excitation; lifting electromagnet 15 thereby generating suction force, and by a clutch disengagement interrupt the force flow from the drive motor 8 to the tool 5. 为排除以此类短路伪装的偶然性事件,在传感器监控线路中设延时元件,它只是在这种情况下才释放提升电磁铁的控制器,即,在第一次出现短路后至少经过两个脉冲或与两个脉冲相应的时间。 Contingencies such as a short circuit exclude disguise, the delay element disposed in the sensor monitor line, it is only in this case the controller lifting electromagnet is not released, i.e., after the first short circuit occurs through the at least two pulse or two pulses and the corresponding time. 为了也能检测到高电阻的短路,此传感器也适应这种高电阻的外电路。 In order to detect a short circuit can be a high resistance, the sensor can adapt to the external circuit of a high resistance.

Claims (18)

1.电机驱动的手工工具尤其是雕孔锯和圆锯的安全装置,其中,从电动机到工具的力流通过一个设在两者之间、可将传动轴、驱动电机和工具驱动轴之间的直接力流断开的具有离合器构件可脱开的离合器传递,离合器构件与提升电磁铁配合作用,后者借助于一个可在工具与身体部分接触时活化的电子传感器励磁,断开离合器,并因而切断从电机到工具的连接,其特征为:离合器构件可平行于轴线移动并持续地与工具或工具支架和驱动轴力锁合连接或形锁合连接;以及,电动机传动轴或与之连接的离合圆盘,具有与工具侧离合器构件配合作用的凹槽/凸起,提升电磁铁去励磁时为了建立力流离合器构件与它们啮合,而在提升电磁铁励磁时为了切断力流可以与它们脱开啮合。 1. Motor-driven hand tool, especially a circular saw and hole saw carved safety device, wherein the power flow from the motor to the tool through a provided therebetween, the transmission shaft, the driving motor between the drive shaft and the tool direct force flow off the clutch member having a releasable clutch transmission, the clutch member cooperates with the lifting magnet, which by means of an electronic sensor excitation activatable in the tool body part in contact with, disengage the clutch, and thus the connection from the motor to the cutting tool, wherein: the clutch member may be moved parallel to the axis and continuous with the drive shaft and the tool or tool holder locking connection or a force-locking connection; and a motor shaft connected thereto, or the clutch discs, cooperates with a groove having a tool side clutch member / projection, in order to establish a force flow to enhance engagement with the clutch member when they are de-energized electromagnet and the electromagnet excitation in the lifting force to the cutting they can flow disengaged.
2.按照权利要求1所述的安全装置,其特征为:驱动电机(8)的传动轴(9)有一个设在工具(5)电动机一侧的离合圆盘,离合圆盘设有一些圆形的围绕其中心排列的止动位置(11),其中至少有几处与设计为驱动销(13)的离合器构件配合作用,驱动销通过其支架(4)或通过其驱动轴与工具(5)持续啮合构成传力机构,提升电磁铁(15)为了断开使离合圆盘(10)/驱动销(12)轴向错动,驱动销(12)至少插入几个止动位置(11)中,以及,提升电磁铁具有逆其工作方向作用的机构,它在提升电磁铁(15)励磁时被压紧,而在提升电磁铁去励磁时它取消由提升电磁铁引起的离合圆盘(10)或驱动销(13)的移位。 2. A security device according to claim 1, wherein: the motor drive shaft (8) (9) there is provided a tool (5) side of the clutch disk motor, clutch discs provided with a number of circular shape around the stop position (11) arranged in the center thereof, wherein at least several of the clutch member and is designed to drive pin (13) cooperates, through which the drive pin holder (4) through which the drive shaft or the tool (5 ) constituting the power transmission mechanism continuously engaging, lifting electromagnet (15) to disconnect the clutch disc (10) / drive pin (12) an axial dislocation, the drive pin (12) is inserted into at least several stop positions (11) in, and a lift mechanism having a solenoid acting against its working direction, which (15) is pressed in the excitation lifting electromagnet, and the electromagnet de-energized when lifting it eliminates clutch disc caused by the lifting electromagnet ( displacement 10) or drive pin (13).
3.按照权利要求2所述的安全装置,其特征为:至少设有一个固定安装的驱动销(13)的工具(5)或工具支架(4),设计成可在能轴向移动的离合圆盘(10)旁与之同轴地自由旋转,驱动销(13)在离合圆盘(10)的止动位置(A)插入它的止动位置(11)中,在这种情况下提升电磁铁(15)与离合圆盘以这样的方式配合作用,即,在提升电磁铁(15)励磁时吸动离合圆盘(10),并使位于止动位置(11)中的驱动销(13)脱开。 3. A security device according to claim 2, wherein: at least a driving pin (13) fixedly mounted to a tool (5) or the tool holder (4), designed to be axially displaceable in the clutch disc (10) coaxially therewith near the free rotation, the drive pin (13) into its stop position in the disk clutch (10) of the stop position (a) (11), the lifting in this case an electromagnet (15) and the clutch disc cooperates in such a manner that, when the lifting electromagnet (15) attractable excitation clutch discs (10), and the drive pin is a stop position (11) in ( 13) release.
4.按照权利要求2所述的安全装置,其特征为:设有一个可轴向移动的断开机构(12),它有至少一个驱动销(13)、可以被自由带转以及安置在与驱动电机(8)传动轴(9)固定连接的离合圆盘(10)和工具(5)或工具支架(4)之间并与它们同轴,断开机构(12)设计成圆盘状,并最好有一个比离合圆盘(10)大的直径,以及,提升电磁铁(15)在伸出的圆周区设有旋转对称的磁场分布,其中,方向朝着工具(5)或工具支架(4)的驱动销(13)可在工具(5)或支架(4)的孔中轴向移动,以及,驱动销(13)设有朝离合圆盘(10)方向的伸出段(13.1),它们与沿轴向固定的离合圆盘(10)的止动位置(11)配合作用,使提升电磁铁(15)励磁时吸引断开机构(12),并使位于止动位置(11)中的驱动销(13)脱开啮合。 4. The safety device according to claim 2, wherein: means is provided with an axially movable disconnection (12), having at least one drive pin (13), may be freely transferred and disposed of with the clutch discs (10) and the tool (4) (5) or the tool holder driving motor (8) drive shaft (9) is fixedly connected and coaxial with them, disconnecting mechanism (12) is designed as a disc-shaped, and preferably has a ratio of clutch discs (10) of large diameter, and a lifting electromagnet (15) is provided with a rotationally symmetrical magnetic field distribution extends in the circumferential area, wherein a direction towards the tool (5) or the tool holder (4) a drive pin (13) is axially movable in the bore means (5) or the holder (4), and a drive pin (13) is provided (10) projecting towards the clutch disc section (13.1 ), which cooperates with the axially fixed disc clutch (10) of the stop position (11), the lifting electromagnet (15) suction disconnecting mechanism (12) is energized, and the stop located at position (11 a drive pin (13)) is disengaged.
5.按照权利要求2所述的安全装置,其特征为:设有一个可轴向移动的断开机构(12),它有至少一个驱动销(13)、可以被自由带转以及安置在工具(5)或工具支架(4)背对着与驱动电机(8)传动轴(9)固定连接的离合圆盘(10)的那一侧并与它们同轴,断开机构(12)设计成圆盘状,并有一个至少与止动位置(11)的圆直径相等的直径,以及,提升电磁铁(15)同心地安置在断开机构(12)的所在区内,其中,方向朝着工具(5)或工具支架(4)轴向可移动的驱动销(13),可沿轴向在工具(5)或支架(4)的孔中移动,并穿过工具(5)或工具支架(4)与离合圆盘(10)的止动位置(11)配合作用,使提升电磁铁(15)励磁时吸引断开机构(12),并使位于止动位置(11)中的驱动销(13)脱开。 The safety device according to claim 2, wherein: the axially movable with a disconnecting mechanism (12), having at least one drive pin (13), may be freely transferred and disposed with the tool (5) or the tool holder (4) facing away from the drive motor (8) drive shaft (9) of the clutch disc (10) is fixedly connected to the side of and coaxially with their design, disconnecting mechanism (12) to disk-shaped, and has a diameter of at least the stop position (11) of the same diameter, and a lifting electromagnet (15) concentrically disposed in the region where the disconnecting mechanism (12), wherein the direction toward the tool (5) or the tool holder (4) axially movable drive pin (13) movable axially in the bore means (5) or the holder (4), and through the tool (5) or the tool holder ( 4) and the clutch discs (10) of the stop position (11) cooperates, the lifting electromagnet (15) suction disconnecting mechanism (12) is energized, and the drive pin is a stop position (11) in ( 13) release.
6.按照权利要求1至5之一所述的安全装置,其特征为:止动位置(11)设计为在离合圆盘(10)中工具一侧的凹穴,它们最好具有沿离合圆盘(10)旋转方向在前面的进入斜面(11.1)。 6. The security device of claim 1 to claim 5, wherein: the stop position (11) designed as a pocket in the tool side of the clutch discs (10), they are preferably along a circular clutch (10) in the rotational direction of the disk into the front ramp (11.1).
7.按照权利要求1至6之一所述的安全装置,用于实施直线运动的工具,其特征为:断开机构(12)有一个驱动销(13),离合圆盘(10)至少有一个,最好有一些最好均匀分布的止动位置(11)。 7. The safety device according to one of claim 1, for linear movement tool embodiment, wherein: disconnecting mechanism (12) has a drive pin (13), the clutch disc (10) has at least a, some of the best position of the stopper are preferably uniformly distributed (11).
8.电机驱动的手工工具尤其是雕孔锯和圆锯的安全装置,其中,从电动机到工具的力流通过一个设在两者之间、可将传动轴、驱动电机和工件驱动轴之间的直接力流断开的具有离合器构件可脱开的离合器传递,离合器构件与提升电磁铁配合作用,后者借助于一个可在工具与身体部分接触时活化的电子传感器励磁,断开离合器,并因而切断从电机到工具的连接,其特征为:至少一个离合器构件(16)沿径向可运动地铰接在驱动电机(8)的传动轴(9)上或工具(5)的驱动轴(5.1)上,每一个离合器构件(16)总是在另一根轴的端部所在区内有一个驱动鼻(17),用于将这两个轴端(5.1、9)力锁合地和形锁合地然而可脱开地连接起来;以及,工具(5)的驱动轴(5.1)或驱动电机(8)的传动轴(9)有一些作为止动位置(25)的沿圆周分布的槽,它们与一个或多个离合器构件(17)配合作用,使提 8. A motor-driven hand tool, especially a circular saw and hole saw carved safety device, wherein the power flow from the motor to the tool through a provided therebetween, the transmission shaft, the drive motor and the workpiece drive shaft direct force flow off the clutch member having a releasable clutch transmission, the clutch member cooperates with the lifting magnet, which by means of an electronic sensor excitation activatable in the tool body part in contact with, disengage the clutch, and thus the connection from the motor to the cutting tool, wherein: the at least one clutch member (16) is hinged shaft drive motor (8) radially movably in (9) or tools (5) of the shaft (5.1 a), each clutch member (16) is always in the region of the other end portion of the shaft there is located a drive nose (17) for the two axial ends (5.1,9) shaped force-locking manner and However, the locking can be releasably connected; a drive shaft and a propeller shaft, the tool (5) in (5.1) or the drive motor (8) (9) some position as a stopper groove (25) circumferentially distributed , one or more thereof with the clutch member (17) cooperates, Titus 电磁铁(15)去励磁时,为了建立力流它们与离合器构件啮合,在提升电磁铁(15)励磁时,为断开力流它们与离合器构件脱开啮合。 An electromagnet (15) is de-energized, in order to establish a force flow which engage with the clutch member, when the lifting electromagnet (15) energized with the clutch member are disengaged to disconnect the engagement force flow.
9.按照权利要求8所述的安全装置,其特征为:止动位置(25)按角向距离最大为120°设置。 9. A security device according to claim 8, wherein: the stop position (25) is set to 120 ° to a maximum distance by angle.
10.按照权利要求9所述的安全装置,其特征为:提升电磁铁(15)与一个环形地围绕着工具(5)的驱动轴(5.1)的断开环(19)配合作用,后者面朝电动机(8)传动轴(9)端一侧具有设计为上升斜面(18)的楔面;以及,离合器构件(16)的位于此上升斜面(18)所在区的端部,斜削成与之相应的斜面,使得在提升电磁铁(15)励磁时将断开环(19)嵌入这些端部的下方,并使端部抬出以便脱开在两根轴(5.1、9)之间的传力或形状相配的连接,其中,提升电磁铁(15)有朝其工作方向作用的机构,在提升电磁铁(15)去励磁时它们被压紧,用来支持由提升电磁铁引起的离合杠杆(16)的位移。 10. A security device according to claim 9, wherein: lifting solenoid (15) cooperating with a ring surrounds the drive shaft (5.1) of the tool (5) off ring (19), the latter facing the electric motor (8) drive shaft (9) having an end side designed as a rising inclined surface (18) of the wedge surfaces; an end portion (18) and a region where the clutch member (16) is located in this rising sloped, beveled into correspondingly slope, so that the lifting solenoid (15) disconnects the ring (19) fitted below the excitation of these ends, and carried away to disengage the end portion between the two shafts (5.1,9) the force-transmitting or shape of the mating connector, wherein the lifting magnet (15) towards its working direction the role of a mechanism, which is compressed when the lifting electromagnet (15) de-energized, due to support by a lifting electromagnet displacement of the clutch lever (16).
11.按照权利要求9或10所述的安全装置,主要用于电动机驱动的具有旋转工具的手工工具,其特征为:设有一个可由提升电磁铁(15)触发的制动装置(20)。 11. The security device of claim 9 or claim 10, primarily for hand tool having a motor driving the rotary tool, characterized by: lifting the brake device may be provided with a solenoid (15) the trigger (20).
12.按照权利要求11所述的安全装置,其特征为:制动装置(20)由一个与工具(5)或工具支架连接的制动十字架(21)和多个与提升电磁铁(15)或其衔铁连接并设有制动止挡(21.1)的制动臂(21)构成,在提升电磁铁(15)励磁时制动臂可摆入制动十字架(21)的旋转圆内。 12. A security device according to claim 11, wherein: the cross brake brake (20) consists of a tool (5) or the tool holder connector (21) and a plurality of lifting solenoid (15) or armature connected to the brake and a stop (21.1) of the brake arm (21), the lifting electromagnet (15) can be pivoted into the brake arm cross brake (21) the excitation of the circle of rotation.
13.按照权利要求12所述的安全装置,其特征为:制动十字架(21)的径向臂和/或制动止挡(22)具有沿旋转方向加长的矩形剖面;以及,制动十字架(21)的径向臂和/或制动止挡(22)最好在止挡部位设弹性缓冲件(21.1;23)。 13. A security device according to claim 12, wherein: the brake cross (21) radial arms and / or a brake stopper (22) has a rectangular cross section elongated in the rotational direction; and a brake Cross (21) a radial arm and / or a brake stopper (22) is preferably provided on the stopper portion of the resilient cushioning member (21.1; 23).
14.按照权利要求1至13之一所述的安全装置,其特征为:提升电磁铁(15)与弹簧(14)配合作用,弹簧最好设计为朝提升电磁铁(15)工作方向作用的压力弹簧。 14. A safety device according to any one of claim 13, wherein: lifting solenoid (15) and a spring (14) cooperates, preferably designed as a spring toward the lifting electromagnet (15) acting in the working direction pressure spring.
15.用于按照权利要求1至14之一所述安全装置的开关机构,其特征为:手工工具(1)的手柄(3)有一个传感器电极(3.1),在它与运动的工具(5)之间存在一个由传感器监控线路(SS)产生的检测电压,它的最好具有普通量级的反向电压加在其它部分上,在这种情况下电子传感器监控线路(SS)是识别这两个输出信号之间短路的环节,它与提升电磁铁控制器(HS)配合作用接通提升电磁铁(15)的电流回路。 15. A 14 according to the switching mechanism 1 to safety device as claimed in claim, wherein: the hand tool (1) of the handle (3) has a sensor electrode (3.1), with its movement in the tool (5 between) detecting a voltage generated by the sensor monitor line (SS), which preferably have common order of reverse voltage applied to the other portions, in this case an electronic sensor monitoring circuit (SS ) is to identify a short circuit link between the two output signals, lifting it (HS) cooperates lifting magnet controller turns the electromagnet (15) of the current loop.
16.按照权利要求15所述的开关机构,其特征为:利用至少1kV的电压脉冲作为检测电压,脉冲群的重复频率在0.5至1.5kHz范围内。 16. The switching mechanism according to claim 15, wherein: the voltage pulse as a detection voltage of at least 1kV, in the range of 0.5 to 1.5kHz on the repetition frequency of pulse bursts.
17.按照权利要求15或16所述的开关机构,其特征为:传感器监控线路(SUS)有一个延时元件,它将一个由传感器识别的身体短路具有时间延迟地接通提升电磁铁控制器(HS),这一时间延迟最好相当于大约脉冲频率的两个周期持续的时间。 17. The switching mechanism as claimed in claim 15 or 16, wherein: the line sensor monitoring (SUS) has a delay element having a time delay which will improve the electromagnet is turned on by the controller of body sensor detects a short-circuit (HS), this time delay preferably corresponds to approximately two cycles of duration of the pulse frequency.
18.按照权利要求15至17之一所述的开关机构,其特征为:检测电压与电源电压在电流上分开,在这种情况下最好在传感器监控线路(SUS)中设检测电压发生器,它产生一个整直的低压,由此低压脉冲形成器产生脉冲电压,其中,导引检测脉冲的连接线路最好是屏蔽线。 18. The switching mechanism as claimed in claim 15 to one of 17, wherein: the detection voltage and the supply voltage on the current separated, preferably provided in a sensor monitoring the detection voltage generator line (SUS) in this case it produces a low-pressure straightening, thereby forming low pressure pulse generated by the pulse voltage, wherein the guide line connecting the detection pulse is preferably shielded wire.
CN 96192655 1996-01-18 1996-01-18 Safety device for electricity driven hand tools, in particular circular and compass saw CN1179125A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102574281A (en) * 2009-10-23 2012-07-11 罗伯特·博世有限公司 Protective sensor system for a hand-held power tool
CN105592963A (en) * 2013-03-14 2016-05-18 罗伯特·博世有限公司 Rotating saw with balanced dynamic braking

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102574281A (en) * 2009-10-23 2012-07-11 罗伯特·博世有限公司 Protective sensor system for a hand-held power tool
CN105592963A (en) * 2013-03-14 2016-05-18 罗伯特·博世有限公司 Rotating saw with balanced dynamic braking
CN105592963B (en) * 2013-03-14 2018-03-09 罗伯特·博世有限公司 For pivoting the automatic breaking system and its operating method of electric tool

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